案情重大、复杂
important and complicated case
超重大型钢桁架
overweight and large steel truss
称重显示控制器
weighing display controller
城市重大危险源管理系统
city major hazard management system
城镇职工重大疾病保障水平
level of employee medical insurance for serious disease
medical insurance for urban employees
船舶重大缺陷
vessel’s fatal deficiencies
多重显示控制器
multidisplay control unit
MDCU
多重重返载具
multiple re-entry vehicle (MRV